A class of oxalic diamides are found to be effective ligands for promoting CuI-catalyzed aryl amination with less reactive (hetero)aryl chlorides. The reaction proceeds at 120 °C with K3PO4 as the base in DMSO to afford a wide range of (hetero)aryl amines in good to excellent yields. The bis(N-aryl) substituted oxalamides are superior ligands to N-aryl-N'-alkyl substituted or bis(N-alkyl) substituted
发现一类
草酸二酰胺是促进 CuI 催化的芳基胺化与反应性较低的(杂)芳基
氯化物的有效
配体。该反应在 120 °C 下以 K3PO4 作为碱在
DMSO 中进行,以良好到极好的收率提供范围广泛的(杂)芳基胺。双(N-芳基)取代的草酰胺是优于N-芳基-N'-烷基取代或双(N-烷基)取代的草酰胺的
配体。
配体中芳环的电子性质和空间性质对其效率都很重要。